CVE-2018-6329

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 62%
CISA-KEV: Not listedEPSS: 62%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

It was discovered that the Unitrends Backup (UB) before 10.1.0 libbpext.so authentication could be bypassed with a SQL injection, allowing a remote attacker to place a privilege escalation exploit on the target system and subsequently execute arbitrary commands.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
99.1%
KEV
Not listed

Published

March 14, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jun 6, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Unitrends Enterprise Backup - bpserverd Privilege Escalation (Metasploit) - Linux local Exploit

https://www.exploit-db.com/exploits/45913/
generic🟡 PoC Available

Unitrends UEB 10.0 - Root Remote Code Execution - Linux remote Exploit

https://www.exploit-db.com/exploits/44297/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-05 02:27 UTCEPSS rescore
  2. 2026-07-01 15:03 UTCEPSS rescore
  3. 2026-07-01 15:03 UTCEPSS rescore
  4. 2026-06-28 04:53 UTCEPSS rescore
  5. 2026-06-28 04:53 UTCEPSS rescore
  6. 2026-06-27 03:06 UTCEPSS rescore
  7. 2026-06-27 03:06 UTCEPSS rescore
  8. 2026-06-25 13:47 UTCEPSS rescore
  9. 2026-06-25 13:47 UTCEPSS rescore
  10. 2026-06-24 14:02 UTCEPSS rescore
  11. 2026-06-24 14:02 UTCEPSS rescore
  12. 2026-06-23 21:30 UTCEPSS rescore
  13. 2026-06-23 21:30 UTCEPSS rescore
  14. 2026-06-22 14:23 UTCEPSS rescore
  15. 2026-06-22 14:23 UTCEPSS rescore
  16. 2026-06-21 01:57 UTCEPSS rescore
  17. 2026-06-21 01:57 UTCEPSS rescore
  18. 2026-06-18 17:50 UTCEPSS rescore
  19. 2026-06-18 17:50 UTCEPSS rescore
  20. 2026-06-17 17:50 UTCEPSS rescore
  21. 2026-06-16 17:50 UTCEPSS rescore
  22. 2026-06-16 17:50 UTCEPSS rescore
  23. 2026-06-15 17:45 UTCEPSS rescore
  24. 2026-06-13 22:58 UTCEPSS rescore
  25. 2026-06-12 23:09 UTCEPSS rescore
Show 22 more
  1. 2026-06-12 23:09 UTCEPSS rescore
  2. 2026-06-10 22:16 UTCEPSS rescore
  3. 2026-06-10 13:19 UTCEPSS rescore
  4. 2026-06-07 15:22 UTCEPSS rescore
  5. 2026-06-07 15:22 UTCEPSS rescore
  6. 2026-06-06 13:45 UTCEPSS rescore
  7. 2026-06-06 13:45 UTCEPSS rescore
  8. 2026-06-05 22:45 UTCEPSS rescore
  9. 2026-06-05 22:45 UTCEPSS rescore
  10. 2026-06-05 06:08 UTCEPSS rescore
  11. 2026-06-05 06:08 UTCEPSS rescore
  12. 2026-06-04 13:10 UTCEPSS rescore
  13. 2026-06-04 13:10 UTCEPSS rescore
  14. 2026-06-01 13:50 UTCEPSS rescore
  15. 2026-05-31 22:29 UTCEPSS rescore
  16. 2026-05-31 22:29 UTCEPSS rescore
  17. 2026-05-29 13:41 UTCEPSS rescore
  18. 2026-05-28 13:43 UTCEPSS rescore
  19. 2026-05-28 13:42 UTCEPSS rescore
  20. 2026-05-28 10:26 UTCEG score recompute
  21. 2026-05-28 10:26 UTCGHSA enrichment
  22. 2026-05-26 00:46 UTCOSV refresh

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-45913✓ verified
    First seen Nov 29, 2018

    Unitrends Enterprise Backup - bpserverd Privilege Escalation (Metasploit)

    Open source ↗
  • Exploit-DBEDB-44297
    First seen Mar 16, 2018

    Unitrends UEB 10.0 - Root Remote Code Execution

    Open source ↗
  • Metasploitexploit/linux/local/ueb_bpserverd_privesc✓ verified
    First seen Mar 14, 2018

    Unitrends Enterprise Backup bpserverd Privilege Escalation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-6329?
CVE-2018-6329 is a critical vulnerability published on March 14, 2018. It was discovered that the Unitrends Backup (UB) before 10.1.0 libbpext.so authentication could be bypassed with a SQL injection, allowing a remote attacker to place a privilege escalation exploit on the target system and subsequently execute arbitrary commands.
When was CVE-2018-6329 disclosed?
CVE-2018-6329 was first published in the National Vulnerability Database on March 14, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-6329 actively exploited?
CVE-2018-6329 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-6329?
CVE-2018-6329 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-6329?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-6329, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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